The intermediate filaments in the nucleus are made of
a. keratins.
b. lamins.
c. desmin.
d. vimentin.
e. None of the above; intermediate filaments are all cytosolic.
Ans: b. lamins.
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Which of the following is incorrectly paired?
a. nerve net—simple nervous system common in radially symmetrical animals b. CNS—consists of the spinal column and brain c. interneurons—portion of the peripheral nervous system that integrates signals d. spinal column—protects the spinal cord
Acids are compounds that:
a. can bind hydrogen ions. b. can release hydrogen ions. c. are pH 8 or above. d. contain hydrogen and hydroxide ions equal in number. e. raise pH.
ENSO refers to a periodic warming of surface ocean waters
____________________ Indicate whether the statement is true or false.
The resolving power of a good light microscope is
a. 0.2 mm. b. 0.2 ?m. c. 0.2 nm. d. 0.2 Å.